Using an ATI 4200 HD upgrading to Catalyst 11.9 did NOT WORK for me, either.
Rainbow effect is solved, and display looks fine for a few second, but soon gets disorted (window contents diagonally shifted) and instable. Switching to text console returns a unreadablye display and finally locks the whole netbook (Thinkpad Edge 11).
Using an ATI 4200 HD upgrading to Catalyst 11.9 did NOT WORK for me, either.
Rainbow effect is solved, and display looks fine for a few second, but soon gets disorted (window contents diagonally shifted) and instable. Switching to text console returns a unreadablye display and finally locks the whole netbook (Thinkpad Edge 11).